Home / 258,839.25-387,741.94-205,621.34

Finding the Fourth Proportional to 258,839.25, 387,741.94 and 205,621.34

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Solution

The fourth proportional to 258,839.25, 387,741.94 and 205,621.34 is: 308,021.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,839.25 : 387,741.94 = 205,621.34 : x
  2. Step 2: Convert to fraction form
    258,839.25/387,741.94 = 205,621.34/x
  3. Step 3: Cross multiply
    258,839.25x = 387,741.94 × 205,621.34
  4. Step 4: Simplify right side
    258,839.25x = 79,728,014,824.24
  5. Step 5: Solve for x
    x = 79,728,014,824.24/258,839.25
  6. Step 6: Final answer
    x = 308,021.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.